Icom IC-A24 Instruction Manual

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Icom IC-A24 Instruction Manual Manual pdf 29 page image

246VOR NAVIGATION (IC-A24 ONLY)■ Duplex operation(U.S.A. version only)The duplex function allows you to call a flight service stationwhile receiving a VOR station. The duplex function requiresfrequency programming for the flight service station in ad-vance.D Programming a duplex frequencyq Push [CLR•DEL] to select the frequency mode.w Set a NAV band frequency using the tuning dial or keypad.• NAV band frequency range: 108.000–117.975 MHze Push , then push [5•DUP-W].• “DUP” flashes and transmit frequency appears.r Set the frequency of the flight service station using thetuning dial or keypad. When using the tuning dial, push[ENT•WX] after setting a frequency.• The displayed frequency returns to the NAV band frequency.D Operating the duplex functionq Set the desired frequency in the NAV band.• NAV band frequency range: 108.000–117.975 MHzw Push , then push [6•DUP] to turn the duplex functionON.• “DUP” appears on the function display.e Hold down [PTT] to transmit at the pre-programmedtransmit frequency.r Release [PTT] to return to receive.t Push , then push [6•DUP] to cancel the function.• “DUP” disappears on the function display.NOTE: A duplex frequency can be programmed into eachmemory channel independently. Set a duplex frequencybefore programming the memory channel, if desired. Theduplex ON/OFF setting can also be programmed into amemory channel.EXAMPLE: Programming 123.65 MHz as the transmit frequency in the duplex function.6